import pandas as pd

df_obj = pd.DataFrame({'no1': [1.0, 2.0, 3.0], 'no2': [4.0, 5.0, 6.0]},
                      index=['a', 'b', 'c'])

new_df = df_obj.reindex(index=['a', 'c', 'e'])
new_df = df_obj.reindex(index=['a', 'c', 'e'], fill_value = 9)
new_df = df_obj.reindex(index=['a', 'c', 'e'], method = 'ffill')
print(new_df)